Home / 13,445.60-18,555.70-7,477.92

Finding the Fourth Proportional to 13,445.60, 18,555.70 and 7,477.92

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Solution

The fourth proportional to 13,445.60, 18,555.70 and 7,477.92 is: 10,319.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.60 : 18,555.70 = 7,477.92 : x
  2. Step 2: Convert to fraction form
    13,445.60/18,555.70 = 7,477.92/x
  3. Step 3: Cross multiply
    13,445.60x = 18,555.70 × 7,477.92
  4. Step 4: Simplify right side
    13,445.60x = 138,758,040.14
  5. Step 5: Solve for x
    x = 138,758,040.14/13,445.60
  6. Step 6: Final answer
    x = 10,319.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.